Insurance Business’s newly expanded Marsh Brokerage Market Review introduces its deepest-ever examination of technology investment and climate-risk leadership, revealing how the world’s largest broker is reshaping investment and thought leadership in both industry-vital areas.
Drawing on new legal, restructuring and expert coverage, the enhanced Marsh Market Review details the broker's remarkable technology reorganization following its Jardine Lloyd Thompson acquisition (2019). This includes cybersecurity, data architecture, and advanced analytics upgrades across its broking and advisory units. The Review’s new visuals track technology-related restructuring, spending trends, and operational risk exposure.
A major expansion focuses on artificial intelligence and frontier tools, including Marsh McLennan’s LenAI platform; the Sentrisk supply-chain and “Tariff Simulator” analytics system; and early pilots in blockchain-enabled placement. The Review also examines emerging insurance business frameworks for data centres, cloud infrastructure, and AI-driven business models, areas of rapidly growing client demand.
Equally prominent is Marsh’s climate and ESG leadership. New chapters of the Marsh Brokerage Review document the firm’s carbon-capture insurance facility, renewable-energy tax-credit enablement, and internal climate-resilience playbooks used by global clients. Expanded charts and survey findings map transition risk, supply-chain exposure, and climate-driven underwriting pressure across regions.

“Marsh Brokerage Review, Fig. 8: Risk and Insurance Services Segment Revenue Breakdown.” All figure data available in Brokerage Review data appendix.
These technology and climate insights are fully integrated with the report’s broader analysis of financial performance, litigation exposure, leadership governance, and market valuation. Mayer Shields (KBW) and Paul Newsome (Piper Sandler) provide context on how investment discipline and advisory capability influence Marsh’s long-term competitive positioning.
All analysis is supported by dozens of new figures and a consolidated data appendix, sourcing SEC filings, IBISWorld data, and proprietary IB research. In aggregate, the enhanced Marsh Brokerage Market Review is a vital benchmarking tool for brokerage firms with a mind to navigate digital, climate, and systemic risk like the pros.
Get the complete report here.